Keep my job for me while I give birth.
The students keep me on my toes.
Word: "keep"
different meanings

To lash something to a spar.
The lion lashed its tail.
Word: "lash"
different meanings

She was tempted to treat the whole affair as a joke.
The patient must be treated right away or she will die.
Word: "treat"
different meanings

Our grant has run out and we can not keep you on.
We kept the work going as long as we could.
Word: "keep"

the same meaning